<template>
    <transition name="fade">
        <div v-show="showFlag" class="food" ref="food">
            <div class="food-content">
                <div class="image-header">
                    <img :src="food.image" alt="">
                    <div class="back" @click="back()">
                        <i class="icon-arrow_lift"></i>
                    </div>
                </div>
                <div class="content">
                    <h1 class="title">{{food.name}}</h1>
                    <div class="detail">
                        <span class="sell-count">月售{{food.sellCount}}份</span>
                        <span class="rating">好评率{{food.rating}}%</span>
                    </div>
                    <div class="price">
                        <span class="now">${{food.price}}</span>
                        <span class="old" v-show="food.oldPrice">${{food.oldPrice}}</span>
                    </div>
                    <div class="cartcontrol-wrapper">
                        <cartcontrol :food='food'></cartcontrol>
                    </div>
                    <div @click.stop.prevent="addFirst($event)" class="buy" v-show="!food.count ||food.count===0">
                        加入购物车
                    </div>
                </div>
                <split v-show="food.info"></split>
                <div class="info" v-show="food.info">
                    <h1 class="title">商品信息</h1>
                    <p class="text" >{{food.info}}</p>
                </div>
                <split></split>
                <div class="rating">
                    <h1 class="title">商品评价</h1>
                    <ratingselect :selectType="selectType" :onlyContent='onlyContent' :desc='desc' :rating='food.ratings' @ratingtype='ratingtype($event)' @toggle='toggle($event)'></ratingselect>
                    <div class="rating-wrapper">
                        <ul v-show="food.ratings && food.ratings.length">
                            <li class="rating-item" v-show="needShow(rating.rateType,rating.text)" v-for="(rating,index) in food.ratings" :key="index">
                                <div class="user">
                                    <span class="name">{{rating.username}}</span>
                                    <img :src="rating.avatar" width="12" height="12" alt="">
                                </div>
                                <div class="time">{{rating.rateTime | date}}</div>
                                <p class="text">
                                    <span :class="{'icon-thumb_up':rating.rateType ===0,'icon-thumb_down':rating.rateType ===1}"></span>
                                    {{rating.text}}
                                </p>
                            </li>
                        </ul>
                        <div class="no-rating" v-show="!food.ratings || !food.ratings.length">
                            暂无评价
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </transition>
</template>
<script>
import BScroll from "better-scroll";
import cartcontrol from "../cartcontral/cartcontral";
import split from "../split/split";
import ratingselect from "../ratingselect/ratingselect";
import moment from 'moment'


const POSITIVE  = 0
const NEGATIVE  = 1
const ALL = 2

export default {
  props: {
    food: {
      type: Object
    }
  },
  data() {
    return {
      showFlag: false,
      selectType:ALL,
      onlyContent:true,
      desc:{
          all:'全部',
          positive:'推介',
          negative:'吐槽'
      }
    };
  },
  methods: {
    show() {
      this.showFlag = true;
      
      this.selectType = ALL
      this.onlyContent = false //每次初始化默认值  显示全部  与只显示有内容的

      this.$nextTick(() => {
        if (!this.scroll) {
          this.scroll = new BScroll(this.$refs.food, {
            click: true
          });
        } else {
          this.scroll.refresh();
        }
      });
    },
    back() {
      this.showFlag = false;
    },
    addFirst() {
      if (!event._constructed) {
        return;
      }
      this.$set(this.food, "count", 1);
    },
    ratingtype($event){
        console.log($event)
        this.selectType = $event 
        this.$nextTick(()=>{
            this.scroll.refresh()
        })
    },
    toggle($event){
        this.onlyContent = $event
         this.$nextTick(()=>{
            this.scroll.refresh()
        })
    },
    needShow(type,text){
        if(this.onlyContent&&!text){
            return false
        }
        if(this.selectType ===ALL){
            return true
        }else{
            return type ===this.selectType
        }
    },
  },
  filters:{
      date:function(tiem){
          return moment(tiem).format('YYYY MM DD , h:mm:ss a');
      }
  },
  components: {
    cartcontrol,
    split,
    ratingselect
  }
};
</script>
<style lang="stylus" scoped>
.food {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 48px;
    z-index: 30;
    width: 100%;
    background-color: #fff;
    transform translate3d(0,0,0)
    .image-header {
        position: relative;
        width: 100%; // 使高跟宽保持一致的方法
        height: 0;
        padding-top: 100%;

        img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        .back {
            position: absolute;
            top: 10px;
            left: 0;

            .icon-arrow_lift {
                display: block;
                padding: 18px;
                font-size: 20px;
                color: white;
            }
        }
    }

    .content {
        position: relative;
        padding: 18px;

        .title {
            line-height: 14px;
            margin-bottom: 8px;
            font-size: 14px;
            font-weight: 700;
            color: rgb(7, 17, 27);
        }

        .detail {
            margin-bottom: 18px;
            line-height: 10px;
            height: 10px;
            font-size: 0;

            .sell-count, .rating {
                font-size: 10px;
                color: rgb(147, 153, 159);
            }

            .sell-count {
                margin-right: 12px;
            }
        }

        .price {
            font-weight: 700;
            line-height: 24px;

            .now {
                margin-right: 8px;
                font-size: 14px;
                color: rgb(240, 20, 20);
            }

            .old {
                text-decoration: line-through;
                font-size: 10px;
                color: rgb(147, 153, 159);
            }
        }

        .cartcontrol-wrapper {
            position: absolute;
            right: 12px;
            bottom: 12px;
        }

        .buy {
            position: absolute;
            right: 18px;
            bottom: 18px;
            z-index: 10;
            height: 24px;
            line-height: 24px;
            padding: 0 12px;
            box-sizing: border-box;
            border-radius: 12px;
            font-size: 10px;
            color: #ffffff;
            background-color: rgb(0, 160, 220);
        }
    }
    .info{
        padding 18px
        .title{
            line-height 14px
            margin-height 14px
            font-size 14px
            color rgb(7,17,27)
        }
        .text{
            line-height 24px
            font-size 12px 
            color rgb(77,85,93)
        }
    }
    .rating{
        padding-top 18px
        .title{
            line-height 14px
            margin-left:18px
            font-size 14px
            color rgb(7,17,27)
        }
        .rating-wrapper{
            padding 0 18px 
            .rating-item{
                position relative
                padding 16px 0
                border-bottom 1px solid rgba(7,17,27,0.1)
                .user{
                    position absolute
                    right  0 
                    top 16px
                    line-height 12px
                    font-size 0
                    .name{
                        display inline-block
                        margin-right 6px
                        vertical-align top
                        font-size 10px
                        color rgb(147,153,159)
                    }
                    .avatar{
                        border-radius 50%
                    }
                }
                .time{
                   margin-bottom 6px
                   line-height 12px
                   font-size 10px
                   color rgb(147,153,159) 
                }
                .text{
                    line-height 16px
                    font-size 12px
                    color rgb(7,17,27)
                    .icon-thumb_up,.icon-thumb_down{
                        margin-right 4px
                        line-height 16px
                        font-size 12px
                    }
                    .icon-thumb_up{
                        color rgb(0,160,220)
                    }
                    .icon-thumb_down{
                        color rgb(147,153,159) 
                    }
                }
            }
        }
        .no-rating{
            padding 16px 0 
            font-size 12px
            color rgb(147,153,159)
        }
    }
}

.fade-enter-active, .fade-leave-active {
    transition: all 0.5s;
}

.fade-enter, .fade-leave-to { /* .fade-leave-active below version 2.1.8 */
    opacity: 0;
    transform translate3d(100%,0,0)
}
</style>


